Question
Shannon and Peter have a bicycle race. Shannon cycles at a speed of 15 km/h. Peter cycles at a speed of 21 km/h. If Peter lets Shannon start 48 min before him, how long will Peter take to catch up with Shannon?
3 m

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Shannon and Peter have a bicycle race. Shannon cycles at a speed of 15 km/h. Peter cycles at a speed of 21 km/h. If Peter lets Shannon start 48 min before him, how long will Peter take to catch up with Shannon?